tations of this valuable detergent.
The Genuine is made only by the Inventor, and is secured with a Red Label
bearing this Signature and Address, RICHARD W. THOMAS, CHEMIST, 10. PALL
MALL, Manufacturer of Pure Photographic Chemicals: and may be procured of
all respectable Chemists, in Pots at 1_s_., 2_s_., and 3s. 6d. each,
through MESSRS. EDWARDS, 67. St. Paul's Churchyard; and MESSRS. BARCLAY &
CO., 95. Farringdon Street, Wholesale Agents.

* * * * *

POLICY HOLDERS in other COMPANIES, and intending Assurers generally, are
invited to examine the Rates, Principles, and Progress of the SCOTTISH
PROVIDENT INSTITUTION, the only Society in which the Advantages of Mutual
Assurance can be secured by moderate Premiums. Established 1837. Number of
Policies issued 6,400, assuring upwards of Two and a Half Millions.

Full Reports and every Information had (Free) on Application.

*** Policies are now issued Free of Stamp Duty; and attention is invited to
the circumstance that Premiums payable for Life Assurance are now allowed
as a Deduction from Income in the Returns for Income Tax.

GEORGE GRANT, Resident Sec.
London Branch, 12. Moorgate Street.

* * * * *

PHOTOGRAPHY.

A COMPLETE SET OF APPARATUS for 4l. 4s., containing an Expanding Camera,
with warranted Double Achromatic Adjusting Lenses, a Portable Stand,
Pressure Frame, Levelling Stand, and Baths, complete.

PORTRAIT LENSES of double Achromatic combination, from 1l. 12s. 6d.

LANDSCAPE LENSES, with Rack Adjustment, from 25s.

A GUIDE to the Practice of this interesting Art, 1s., by post free. 1s. 6d.

French Polished MAHOGANY STEREOSCOPES, from 10s. 6d. A large assortment of
STEREOSCOPIC PICTURES for the same in Daguerreotype, Calotype, or Albumen,
at equally low prices.

ACHROMATIC MICROSCOPES.

Beautifully finished ACHROMATIC MICROSCOPE, with all the latest improvement
and apparatus, complete from 3l. 15s., at

C. BAKER'S. Optical and Mathematical Instrument Warehouse, 244. High
Holborn (opposite Day & Martin's).

* * * * *

PHOTOGRAPHIC INSTITUTION.--An EXHIBITION of PICTURES, by the most
celebrated French, Italian, and English Photographers, embracing Views of
the principal Countries and Cities of Europe, is now OPEN. Admission 6d. A
Portrait taken by MR. TALBOT'S Patent Process, One Guinea; Three extra
Copies for 10s.

PHOTOGRAPHIC INSTITUTION,